Zaheer Khan has been ruled out of the rest of India's tour of England. The pace bowler needs ankle surgery, which will rule him out until November.
A statement from the Board of Control for Cricket in India read: "Zaheer Khan is suffering from a recurrent right hamstring strain and a right ankle impingement. He will require a surgery for his ankle, followed by intensive rehabilitation for both the ankle and hamstring. He will need at least 14-16 weeks to recover completely.
"He will therefore not be able to participate in the ongoing Test series and subsequent T20 international and ODI series against England."
Zaheer sustained a hamstring injury in the first Test at Lord's, after bowling just 13.3 overs, and was ruled out of the second Test at Trent Bridge, both of which ended in defeat for the tourists. Although he returned to action in this week's two-day match against Northamptonshire, he bowled just three overs before leaving the field for treatment.
India have called up another left-armer, RP Singh, for the rest of the tour, which continues on Wednesday with the third Test at Edgbaston. Singh last played a Test match in April 2008 and a one-day international in September 2009.